Hair Quiz

Which factors are used to calculate the medullary index of the hair?

• diameter of cuticle and length of the hair

• width of the medulla and width of the hair

• length of the hair and pattern of the hair

• width of the cortex and width of the medulla

Human hair has which type of cuticle?

• Spinous

• coronal

• imbricate

• pigmented

The period when hair is naturally shed is called the ______ stage.

• catogen

• telogen

• anagen

• imagen

Which part of the hair can be analyzed for nuclear DNA?

• Shaft

• Follicle

• Medulla

• All of the Above

Animal hair can be distinguished from human hair because animal hair...

• has a smaller medullary index than human hair and no cortex

• does not have a cuticle

• has a greater medullary index and more variation in the cuticle patterns

• always has a continuous medulla pattern

Tags

NGSS.MS-LS4-2

What is the name for the outer most layer of the hair?

• Medulla

• Hair Shaft

• Cuticle

• Cortex

The hair shaft is composed of the cuticle, cortex and _____.

• Root

• Medulla

• Crown

• Granules

The phase where hair growth slows and the follicle begins to recede is called the ____ phase.

• anagen

• telogen

• catagen

• None of the above

The period of active hair growth is called the ____ phase.

• catagen

• anagen

• telogen

• None of the above

The medulla pattern shown would be

• absent

• fragmented

• continuous

• interrupted